Roller-mill



(No Model.) 4 Sheets-Sheet 1 D. W. MARMON.

ROLLER MILL.

No. 275,835. I I Patented Apr.17,1883..

Z WITNESSES. 1.7V VEJV TOR.

N. PETERS. Pllolo-Lithngraphur. Washingwn. D c

(No Model.) 4 Sheets-Sheet 2.

D. W. MARMON.

ROLLER MILL.

No. 275,835. m Patented Apr. 17,1883.

u FFIEBS. mn-Lnhom hw. Wanhingtun, a. C.

, (No Model.) 7 '4 Sheets-Sheet 3.

D. W. MARMON.

ROLLER MILL.

No. 275,835. Patented Apr. 17,1883.

1.7V VENT OR.

4 Sheets-Sheet 4.

(No Model.)

D. MARMON.

ROLLER MILL.

,835. Patented Apr. 17, 1883.

INVENTOR.

WITNESSES.

N. PETERS. Phm-Lilha mr. wa-hin mn, n. c.

NITED STATES PATENT OFFICE.

DANIEL W. 1VIARlVION OF INDIANAPOLIS, INDIANA, ASSIGNOR TO NORDYKE- &MARMON COMPANY, OF INDIANA.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 275,835, dated April17', 1883.

Application filed February 19, 1883. (No model.)

To all whom it may concern Be it known that I, DANIEL W. MARMON, of thecity of Indianapolis, county of Marion and State of Indiana, haveinvented certain new and useful Improvements in Roller-Mills,

of which the following is a specification. My said invention consists incertain improvements in the construction and arrangement of parts inthat class of machinery for re the reduction of grain known asroller-mills, whereby a machine is produced having many new anddesirable features, as will hereinafter be more fully set forth. IReferring to the accompanying drawings, I: which are made a part hereof,and on which similar letters of reference indicate similar parts, Figurel is a perspective view of a machine embodying my said invention; Fig.2, a top or plan view of the same; Fig. 3, a side ele- 2o vation thereofas seen from the dotted line 2 2 at the left of Fig. 2; Fig. 4, atransverse vertical sectional view thereof as seen when looking towardthe left from the dotted. line y y in Figs. 2 and 5; Fig. 5, alongitudinal vertical sectional view as seen when looking downwardlyfrom the dotted line no :10 in Fig. 2, and to the right and left fromthe corresponding lines in Figs. 3 and 4, respectively; Fig. 6, atransverse vertical sectional view on the dot o ted line to w in Figs. 2and 5; Fig. 7, an elevation, on an enlarged scale, of the end of thehopper and the mechanism for operating the feed-gates as seen from thedotted line a o in Figs. 2,5, and 9; Fig. 8, a plan of the mechan- 5 ismseen in Fig. 7 as seen when looking downwardly from the dotted line a uin said figure; Fig. 9, a horizontal section on the dotted line if t inFigs. 4, 5, 6, and 7; Fig. 10, a central vertical section, on a stillfurther enlarged scale, of one of the feed-gate arms on the dotted line8 s in Fig. 11; Fig..11, a central section on the dotted line 1' r inFig. 10; Fig. 12, ahorizontal section of one of the arms D on the dottedline q q in Fig. 4, and Fig. 13 a 5 skeleton view of the counter-shaftand an alternateconstruction of the mechanism for adjusting the same.

In said drawings the portions marked A A represent the supportingframe-work of the mill; B B, the hopper and other covering portions; 0 GG G, the grinding-rolls; D,

swinging arms in which one of each pair of rolls is mounted; E,adjustable boxes mounted on said arms; F, tempering rods or screws foradjusting the maximum force of the grinding pressure; G, distance oradjusting rods for regulating the position of the arms; H, a bar passingthrough the machine and connecting the two pairs of said rods; I, a camdevice for operating said bar; J, the feed-gates; K, shafts foroperating them; L, a bar for operating saidshafts; M, a counter-shaft;N, adjustable devices wherein the boxes for said shaft are mounted; O,the rods whereby said devices are adjusted; P, the shaft whereby saidrods 6 are connected; andthe numerals 1 to 16, inelusive, the severalpulleys and belts by which the machine is driven. I

The frame A A is mainly a large hollow casting adapted to support themachinery of a roller-mill, and is substantially a well-known form.Spout-like projections on the sides of this frame form openings into thesides of the mill. Other projections or lugs are formed I upon orattached thereto, and serve as supports or bearings for various portionsof the mechanism.

The hopper and covers B B are preferably constructed of wood. The hopperB is intendcd to be substantially stationary. The covers B are removablein the ordinary manner, so that the grinning-rolls may be removedwithout disturbing the hopper.

The several rolls 0 C O C are the crushing or grinding rolls common toroller-mills. 8 They are respectively mounted upon the shafts c c 0 cand are driven by the pulleys 1 2 3 4. the first and third by the mainbeltl2, running under the pulley 5 on the counter-shaft M, and thesecond and fourth by separate belts c 13 and 14, running from thepulleys 6 and 7 on said counter-shaft to said pulleys 2 and 4. It isessential that the two rolls of each pair have their axes in the sameplane; but from unequal wear ofjournals, journal-boxes, or other 5causes they may after use vary from this plane.

To correct this Variation from a common plane, I raise or lower thejournal-boxes of either one or the other roll. As the arms D have only amovement substantially to or fromv the fixed ro-o roll, the boxes E areadjustably secured thereto, so that the roll may be moved up or down onthis arm, as will be presently more fully described.

The arms D are mounted upon pins (1, which pass through their lower endsand through lugs or bosses on the frame A. The holes in these armsthrough which said pins pass are elongated, (see particularly Fig. 4,)which allows the arms to move slightly on said pins, or, in other words,permits the lower ends of said arms to be crowded outwardly somewhat bythe roll supported thereby, when necessary, as in case a substance toohard. to be crushed or ground should come between said roll and itsfellow.

The boxes E have bearing-surfaces c, which rest against similar surfaceson the arms D. They are secured in position by the bolts e, which shouldbe set at an angle, as shown, and are adjusted vertically by the camse*, which are journaled in said arms and support said boxes. Aset-screw, 6 is inserted in each arm in such position as to bear againsta journal of the cam therein, and said cams, after being adjusted to thedesired position, are secured from turning by screwing these setscrewstightly against said journals, as shown in Fig. 12. When the box hasbeen adjusted to the desired position it is secured against furthermovement by tightening up the bolt which forces said box tightly againstits seat, and also against the cam 0 The adj ustable boxes might beplaced on the frame-portion A, if desired, and the rigid boxes on thearms D, without departing from myinvention, so long as the means ofadjustment remain substantiallythe same.

The tempering-rods F pass through the lower ends of the arms 1)., belowor beyond their pivots, through alugor projection on the frame orcasting A, and through a coiled spring, F.

One end ofea ch of said rods is screw-threaded, and bears thehand-wheel'F thereon.

The adjusting-rods G are for the purpose of moving the upper ends of thearms D back and forth, and thus bringing the individual rolls of thepairs nearer to or farther from each other. Each is preferably pivotedat its inner end to a bell-crank lever, G, by a pivot, g, and isprovided at its outer .end with a handnut, 9 and a hand set-nut, 9 Thebell-crank levers are pivoted to the castings A by pivots a, and theirinner ends enter notches in the bar H, and are moved by said bar as itis moved back and forth. The arms D are adjusted inward or back byturning the handnuts 9, and the rolls supported by said arms are thuspositioned nearer to or farther from their fellows.

The bar H passes through from end to end of the machine and connects allthe bell-crank levers G, so that they can be moved simultaneously. Theforcing of this bar back and forth swings the bell-crank levers G ontheir pivots, and thus operates to throw the rods G and arms D inwardlyand outwardly, thereby varying the distance between the individual rollsof the several pairs at one operation. The purpose of this is to movethe rolls back from grinding relation, and then return them to exactlytheir former position without the delay and trouble incident to areadjustment of the machine.

The device I is journaled vertically in bearing in the castings A, andhas a cam formation, '11, upon its lower end, which enters into anorifice in the bar H, (see Figs. 4, 5, and 9,) and thus when turnedforces said bar back and forth. It is provided with a crank or handle,I, by which it is operated. As this handle moves back and forth, itsinner end engages with the catches l on the bar L, and thus through saidbar also operates the feed-gates.

The feed-gates J are thin blades which run along near the feed-rolls J,and each has upwardly-projecting armsj and j. One of these arms, j, oneach gate engages with a projection, 70, on the corresponding shaft K,(see Fig. 6,) and the gate is thus raised and lowered by the partialrotation of said shaft. The other arms, j, are arranged to come incontact with stops j", and the gateis thus thereby prevented fromopening too far. These stops arepreferably-in the form of thumb-screws,as shown, so that the distance to which the gates may open may beadjustably regulated. Each of the armsj has preferably a barrel,j uponits upper end, in which is a spring, j, having a cap against which thestop j rests, there being a hole in the upper end of the barrel, throughwhich the lower end of the stop passes. This spring is quite stiff, sothat it holds its cap firmly against the upper end of the barrel, exceptwhen forced down, in the manner which will now be described. In practiceit frequently occurs that some substance gets between the feed-gate Jand the feed-roll that will not pass through, but remains there, obstructing the proper feeding. To let this substance pass through, it isdesirable to raise the feed-gate temporarily. To do this, and alsoreturn the feed-gate to its exact former position without areadjustment, .I provide the yielding contact-surfaces for the stops bymeans of the springs j, or such known equivalent therefor-as a weight-asmay be desired. These yielding surfaces are held in their fixedpositions with such aforce that in the action of the machine itself theyare rigid surfaces or stops; but when it is desired to raise thefeed-gate higher temporarily it can be done by pressing on the arm Ksufficiently to, overcome the force of the spring j, thus raising thefeed-gate J. On removing the pressure from the arm K, the feed-gate isreturned to itsformer position by the action of said springs returningto their former position against the upper ends of the barrels j. Thefeed-rolls J are driven toward the feed-gates by the arrangement ofbelts shown in Fig. 3, and hereinafter described.

The shafts Khave upon them, preferably at or near their centers, theprojections k which erases a engage with the armsj on the feed-gates,and are thus adapted to open said feed-gates or allow them to close assaid shafts are partially rotated in one or the other direction. Theseshafts have arms K, theweight of which operates to rotate the shafts inone direction.

K are rotated in one direction and the feedgates thereby closed. When itis desired that the feed-gates shall he closed the bar L is moved sothat the project-ions i shall come in contact with the arms K, whichraise the latter, thereby partially rotating the shafts K and causingthe feed-gates to descend. When it is desired that the feed-gates shallbe open the bar L is moved in the reverse direction, and the weight ofthe arms K partially rotates the shafts K in the other direction andopens the gates, as hereinbefore stated, the handle 1 is preferablyextended so as to come in contact with the catches l l on this bar,whereby the feed-gates are opened or closed by the same movement thatthrows the grinding-rolls toward or from each other. In order that thisoperation shall not be prevented by the independent working of the barL, the catches l l are pivoted so as to swing freely toward eachother,-"whereby,the end of said handle I can pass between said catchesat'any time without regard to their positions and without moving saidbar. In its movement from side to side the inner end of said handlecomes in contact with one of said catches, lifts and passes under it,when said catch will dropinto the position shown most plainly by Fig.7,and the handle canuot then he moved withoutmoving the bar L, saidcatches being prevented from swinging outwardly by a small lug orprojection, l attached to the bar directly behind each of them. Whensaid handle is swung around to thelimit of its movement, as shown mostplainly in Fig. 8, it is entirely free from the catches, and the bar canbe moved back and forth entirely independently of said handie.

The counter-shaft M is mounted in boxes M, which are in turn mounted inor form part of the adjustable devices N. When this shaft is raised orlowered it loosens or tightens the several belts employed to run thegrinding-rolls, as will be readily understood by an examination of thedrawings. As will also be readily understood, this counter-shaft runs inthe opposite direction from that in which the rolls 0 0 run, 'and thusdrives the rolls 0 0 also in the opposite direction to said rolls 0 0This causes the adjacent faces of the individual rolls forming each pairto run in the same direction, instead of oppositely, as would be thecase if the rolls themselves ran in the same direction.

The devices N are formed to carry the boxes shown in Fig. 13, ifdesired, instead of separately, as shown in the other figures.

The rods 0 run vertically through hearings in the castings A and A beingsuspended from the latter by means of a collar, 0, which may or may nothe a part of the gear-wheels 0. They are screw-threaded at their lowerends, and enter the upper ends of the devices N, which are alsoscrew-threaded to receive them. These rods are thus adapted to raise andlower said devices N. r

The shaft P extends through the machine from one end to the other, justabove the upper ends of the rods 0. It has gear-wheels P thereon, whichengage-with the gear-wheels O" on said rods 0, and is thus adapted toturn both said rods and raise or lower both the devices Nsimultaneously. Instead of this shaft P, a chain or other belt maybeused to connect the screw-rods O, as in the alternate constructionillustrated by Fig. 13.

The several pulleys and belts operate as follows: The main belt 12drives the pulleys 1, 3, and 5, and thus the rolls 0 and (J in onedirection and the counter-shaft M in the other direction. Thecounter-shat't, through the pulleys 6 and 7 and belts 13 and 14: runningtherefrom to the pulleys 2 and 4, drives the rolls 0 and b in theopposite direction to that in which the rolls 0 and O are driven. Theroll 0 has on its shaft the small pulley 8, which, through the belt 15,drives the pulley 9, one of the feed-rolls J, and the pulley 10 on thesame shaft therewith, and this pulley 10,

through the belt 16, drives the pulley 11 and the other feed-roll.

The various principal operations of my said invention may berecapitulated as follows:

The grain is fed through the hopper by means of the feed-gates Jandfeed-rolls J to the grinding-rolls, which reduce or grind it in theordinary manner. These rolls are adjusted vertically by the movement ofthe boxes E on the arms D and laterally by the adjusting-rods G. When itis desired to vary the relations of the rolls it may readily beaccomplished by turning either the cams e or the hand-nuts 9 orboth,accordingto the variation desired. When it is desired totemporarily part the rolls (thus stopping the grinding) and shut 0d thefeed, it is done by moving the dcviceI by means of the handle 1, whichoperates the bar H, which in turn, through the the bell-crank levers G,operates the rods G, and thus permits the arms D to move back and therolls to part. Theinner end of the handle I at the same time operatesthe bar L, which lifts the arm K, thus partially rotating the shafts K,and causing the gates J to close down against the feed-rolls J and shutoff the flow of grain. A reversing of this motion brings all of saidparts back into exactly their former position, and the grindingproceeds. Should any foreign substance clog either of the feed-gates,said gates may a part of said surfaces, operate to return said gates toposition as soon as the pressure on the arms K is relieved.

Some of the devices and combinations shown and described herein are theinvention of Jesse Warrington or the joint invention of WVarrington andmyself. They are therefore of course not claimed in this application;but are made the subject-matter of other applications for LettersPatent.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination, in a roller-mill, of the arms D, the rods G, thebell-crank levers G, the connecting-bar H, and means for operating thesame, substantially as shown and specified.

2. The combination of the arms D, the armoperating rods G, the bar H forconnecting said rods, and the device I, having cam-shaped portion i,whereby said bar is given a reciprocating movement, and said rods areall operated simultaneously, substantially as set forth.

3. The combination, in a roller-mill, of the swinging arms D, the rodsG, the bell-crank levers G, and the bar H, said bell-crank levers beingpivoted to the frame-work by pivots a, and to said rods by pivots g, andconnected together by said bar, as specified, whereby a movement of thelong arms thereof at opposite ends of the same roll in the same line andsame direction acts to move the rods G and arms D at opposite ends ofthe same roll simultaneously to or from the fixed roll, substantially asset forth.

4. The combination, with the hopper and feed-gate, of the stops j andthe arms 9", the surfaces whereofcome in contact and are in effectnon-yielding during the normal action of the machine, but which areconstructed to yield upon the application of additional force and toreturn to their normal position when said additional force is withdrawn,substantially as set forth.

5. The combination of the hopper, the feedgate, its arms 7" havingsprings j, the stopsurfaces, and stops j, substantially as described,and for the purposes specified.

6. The combination, in a roller-mill, of the frame-work, theroll'shafts, the counter-shaft, belts connecting pulleys on the same,the journal-boxes of said counter-shaft, screw rods or shafts connectingsaid journal-boxes to supporting-bearings on said frame-work, means forconnecting said rods or shafts together, and means for driving the same,whereby said screw-rods may be simultaneously operated, and saidcounter-shaft thus moved nearer to or farther from the roll-shafts,substantially as described, and for the purposes specified.

7. The combination, with the counter-shaft M, of an adjusting mechanismconsisting of the devices N, the rods 0, and mechanism connecting saidrods together, whereby they are operated simultaneously, allsubstantially as set forth.

8. The combination, with the counter-shaft M, of an adjusting mechanismconsisting of the devices N, the rods 0, and the shaft P, said rodsbearing gear-wheels 0, and said shafts bearing gear-wheels P, wherebythey are connected together and thus adapted to be operatedsimultaneously, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 12th day of February, A. D. 1883.

DANIEL W. MARMON. 8.]

In presence of O. BRADFORD, E. W. BRADFORD.

